On Sun, 28 Jul 2002, David S. Miller wrote:
>
> So when the user's reference is dropped, does that operation kill it
> from the LRU or will the socket's remaining reference to that page
> defer the LRU removal?
That is indeed the question. Right now it will defer, which looks like a
bug. Or at least it is a bug without the interrupt-safe LRU manipulations.
I'm starting to be more convinced about Andrew's alternate patch, the
"move LRU lock innermost and make it irq-safe".
Which also would make it saner to do the LRU handling inside
__put_pages_ok() (and actually remove the BUG_ON(in_interrupt()) that
Andrew had there in the old patch).
Linus
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This archive was generated by hypermail 2b29 : Tue Jul 30 2002 - 14:00:31 EST